EP0273028B1 - Form zum Herstellen von Gegenständen, insbesondere Schuhsohlen - Google Patents

Form zum Herstellen von Gegenständen, insbesondere Schuhsohlen Download PDF

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Publication number
EP0273028B1
EP0273028B1 EP19870890295 EP87890295A EP0273028B1 EP 0273028 B1 EP0273028 B1 EP 0273028B1 EP 19870890295 EP19870890295 EP 19870890295 EP 87890295 A EP87890295 A EP 87890295A EP 0273028 B1 EP0273028 B1 EP 0273028B1
Authority
EP
European Patent Office
Prior art keywords
mould
elastic
rigid
insert
elastic insert
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19870890295
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0273028A3 (en
EP0273028A2 (de
Inventor
Gerhard Lenk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lim Schuhtechnologie Gesmbh
Original Assignee
Lim Schuhtechnologie Gesmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lim Schuhtechnologie Gesmbh filed Critical Lim Schuhtechnologie Gesmbh
Publication of EP0273028A2 publication Critical patent/EP0273028A2/de
Publication of EP0273028A3 publication Critical patent/EP0273028A3/de
Application granted granted Critical
Publication of EP0273028B1 publication Critical patent/EP0273028B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/0009—Producing footwear by injection moulding; Apparatus therefor
    • B29D35/0018—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings

Definitions

  • the invention relates to a mold for producing objects, in particular shoe soles, consisting of an elastic insert which delimits the mold cavity on the inside, which has a parting line on one side and forms an elastic joint on the other side, the elastic insert being in a rigid manner , in particular metallic multi-part shape is kept and has an injection channel in its parting line.
  • the invention has set itself the goal of improving a shape of the type mentioned in such a way that the stress on the elastic joint is reduced and thus the life of the shape is increased. This is achieved in that, when the shape is closed, in the area of the elastic joint between the elastic insert and the rigid shape a space is provided. Due to the release of the elastic joint according to the invention, additional stress on the elastic insert due to bulging through the inner edges of the rigid shape is avoided when the mold is opened. The service life of the elastic insert is significantly increased.
  • a particularly low load on the elastic insert results if, according to a further feature of the invention, the space between two fastenings of the elastic insert extends to the rigid form.
  • the attachments can be designed in a variety of ways. It has proven to be particularly advantageous if the elastic insert is fastened to the rigid form by means of springs molded onto the elastic insert and inserted into grooves of the rigid form.
  • FIG. 1 shows a cross section through a mold according to the invention in the closed state and FIG. 2 shows the region of the elastic hinge of the mold in the open state.
  • the form shown in the drawing for applying soles to uppers of shoes or for producing soles has an insert 1 which is designed in accordance with the shape of the sole and which consists of an elastomer and is formed in one piece. On the side of the insert 1 assigned to the shoe tip, it is divided along a parting line 2, the part 3 corresponding to the heel as a result of the The elasticity of the insert 1 is articulated. The insert 1 can therefore be opened and closed.
  • the relatively thin elastic insert 1 is inserted into rigid, in particular metallic molded parts 4, 5, the molded parts 4, 5 being spaced apart from one another in the region 6, so that the mold can be opened.
  • an injection channel (not shown) through which plastic material is injected when the shoe sole is manufactured.
  • a gap 7 is provided according to the invention when the mold is closed in the region of the elastic joint 3 between the elastic insert 1 and the rigid molded parts 4, 5.
  • the space 7 extends between two fastenings 8 of the elastic insert 1 on the rigid molded parts 4, 5.
  • the fasteners are designed as springs 9 which are formed on the elastic insert with an approximately circular cross section and are inserted into grooves in the rigid molded parts 4, 5.
  • a sole stamp can now be inserted in a known manner and an upper part of a shoe drawn onto a last can be introduced into the mold from above. The mold is then closed and plastic is injected via the injection channel arranged in the parting line 2.
  • a further elastic insert 9 can be arranged between the elastic insert 1 and the rigid shape 4, 5.
  • This insert 9 consists of a much softer material than the insert 1, so that 9 differences in size of the shoes can be compensated for by the insert. Due to its softness, the insert 9 can extend into the intermediate space 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
EP19870890295 1986-12-23 1987-12-22 Form zum Herstellen von Gegenständen, insbesondere Schuhsohlen Expired - Lifetime EP0273028B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT343386A AT386801B (de) 1986-12-23 1986-12-23 Form zum herstellen von gegenstaenden, insbesondere schuhsohlen
AT3433/86 1986-12-23

Publications (3)

Publication Number Publication Date
EP0273028A2 EP0273028A2 (de) 1988-06-29
EP0273028A3 EP0273028A3 (en) 1989-11-29
EP0273028B1 true EP0273028B1 (de) 1991-10-23

Family

ID=3550442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870890295 Expired - Lifetime EP0273028B1 (de) 1986-12-23 1987-12-22 Form zum Herstellen von Gegenständen, insbesondere Schuhsohlen

Country Status (7)

Country Link
EP (1) EP0273028B1 (enrdf_load_stackoverflow)
JP (1) JPS63231910A (enrdf_load_stackoverflow)
AT (1) AT386801B (enrdf_load_stackoverflow)
DE (1) DE3774094D1 (enrdf_load_stackoverflow)
ES (1) ES2027704T3 (enrdf_load_stackoverflow)
GR (1) GR3003627T3 (enrdf_load_stackoverflow)
SU (1) SU1575930A3 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435959A (en) * 1993-12-17 1995-07-25 Nike, Inc. Method of making a mold and parts from the mold
DE19616460C2 (de) * 1996-04-25 1998-02-26 Kloeckner Desma Schuhmaschinen Formwerkzeug zur Herstellung von Schuhsohlen aus Kunststoff
WO2005115732A1 (en) * 2004-05-20 2005-12-08 New Balance Athletic Shoe, Inc. Adjustable size mold

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1088485A (fr) * 1953-11-28 1955-03-08 Machine pour la fabrication des pantoufles
AT303571B (de) * 1970-09-03 1972-11-27 Polyair Schuhbedarf Ges M B H Vorrichtung zum Aufbringen von Sohlen auf Oberteile von Schuhen
FR2159737A5 (en) * 1971-11-10 1973-06-22 Vigneron Emilien Shoe upper mould - as hinged pair of mould halves which open to release shoe
DE2224231A1 (de) * 1972-05-18 1973-11-29 Desma Werke Gmbh Form zum herstellen von gegenstaenden, insbesondere schuhsohlen

Also Published As

Publication number Publication date
JPS63231910A (ja) 1988-09-28
ATA343386A (de) 1988-03-15
AT386801B (de) 1988-10-25
EP0273028A3 (en) 1989-11-29
DE3774094D1 (de) 1991-11-28
SU1575930A3 (ru) 1990-06-30
EP0273028A2 (de) 1988-06-29
ES2027704T3 (es) 1992-06-16
GR3003627T3 (enrdf_load_stackoverflow) 1993-03-16

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